John Kerry plays it cool in final push for Iran deal

The secretary of state’s mind-set has been a key subject for critics of the talks with Iran, with some saying they worry he’s too eager to cement his place in history by striking a deal.

But Kerry, as well as some of his powerful co-negotiators, are showing patience this week, willing to blow past a Tuesday deadline and face the threat of triggering a longer congressional review in order to secure a better deal. As Iran has raised tricky last-minute demands, Kerry and his team have stiffened America’s public stance, warning that the negotiations could go either way and that the U.S. will walk away if necessary.